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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-11-14 02:51:06 +0400 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-11-19 19:41:21 +0400 |
| commit | bcebdf846522056a84ba0b0cba5f5413868c9394 (patch) | |
| tree | 76e007a63351abe84a9713e3b182463c230d1053 /arch/s390 | |
| parent | fd25b4c2f226de818e1d2b71e3e681d28bcaf5ba (diff) | |
| download | linux-bcebdf846522056a84ba0b0cba5f5413868c9394.tar.xz | |
vtime: Explicitly account pending user time on process tick
All vtime implementations just flush the user time on process
tick. Consolidate that in generic code by calling a user time
accounting helper. This avoids an indirect call in ia64 and
prepare to also consolidate vtime context switch code.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/vtime.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 80d1dbc5d42e..7c6d861a1a40 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -112,7 +112,12 @@ void vtime_task_switch(struct task_struct *prev) S390_lowcore.system_timer = ti->system_timer; } -void account_process_tick(struct task_struct *tsk, int user_tick) +/* + * In s390, accounting pending user time also implies + * accounting system time in order to correctly compute + * the stolen time accounting. + */ +void vtime_account_user(struct task_struct *tsk) { if (do_account_vtime(tsk, HARDIRQ_OFFSET)) virt_timer_expire(); |